IDirectSound3DBuffer::SetConeOrientation

HRESULT SetConeOrientation(D3DVALUE x,

D3DVALUE y, D3DVALUE z, DWORD dwApply);

Sets the orientation of the sound projection cone for this sound buffer. This method has no effect unless the cone angle and cone volume factor have also been set.

·Returns DS_OK if successful, or DSERR_INVALIDPARAM otherwise.

x, y, and z

Values whose types are D3DVALUE and that represent the coordinates of the new sound cone orientation vector.

dwApply

Value indicating when the setting should be applied. This value must be one of the following:

DS3D_DEFERRED Settings are not applied until the application calls the IDirectSound3DListener::CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation.

DS3D_IMMEDIATE Settings are applied immediately, causing the system to recalculate the 3D coordinates for all 3D sound buffers.

The vector information in the lpvOrientation parameter of the IDirectSound3DBuffer::GetConeOrientation method represents the center of the sound cone. The default value is (0,0,1).